CN113915526A

CN113915526A - High-temperature high-pressure cylinder sealing assembly

Info

Publication number: CN113915526A
Application number: CN202111245731.9A
Authority: CN
Inventors: 江剑
Original assignee: Individual
Current assignee: Ningbo Niubide Automation Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-01-11
Anticipated expiration: 2041-10-26
Also published as: CN113915526B

Abstract

The invention relates to the technical field of machinery and discloses a high-temperature and high-pressure cylinder sealing assembly which comprises an upper half cylinder, a flange I at the bottom of the upper half cylinder, a lower half cylinder below the upper half cylinder, a flange II at the top of the lower half cylinder, and a bolt and a nut for fastening one ends of the flange I and the flange II, which are far away from the upper half cylinder, wherein buckling grooves are formed in the flange I and the flange II. According to the invention, through the designed buckling groove, the transmission air passage and the sealing clamping plate, when the air cylinder is influenced by high-temperature and high-pressure gas during operation, the high-temperature and high-pressure gas is input into the buckling cavity formed by closing the buckling grooves on the flange I and the flange II through the transmission air passage, so that the sealing clamping plate is pushed by the high-temperature and high-pressure gas to be clamped with the trapezoidal bulge formed by the buckling cavity to form self-locking, and therefore, when the upper half air cylinder and the lower half air cylinder are tilted by taking the bolt as a fulcrum, the sealing clamping plate completes sealing compensation by limiting the separation of the flange I and the flange II, and the two air cylinders are kept in a sealing state.

Description

High-temperature high-pressure cylinder sealing assembly

Technical Field

The invention relates to the technical field of machinery, in particular to a component for sealing a high-temperature and high-pressure cylinder.

Background

The cylinder is a device for bearing a gas medium, and the gas in the cylinder is often used as a power source, an output source and the like, so that the gas medium in the cylinder is always in a high-temperature and high-pressure state, and the high-temperature load and the high-pressure load of the gas borne by the cylinder in a working state are very strong, so that the cylinder is very important for sealing the cylinder.

At present to the sealing of high temperature high pressure cylinder, mostly adopt the junction of upper and lower half jar to set up flange class part and carry out bolted connection, pretightning force with the bolt makes two flange contact sealed, but this kind of mode is under the device constantly operates, the cylinder still can be because of the influence of high temperature high pressure, make upper and lower half jar have the trend of inflation, thereby make the fastening department of bolt become a fulcrum, make two upper and lower flanges warp under the drive of upper and lower half jar, though the warpage can automatic recovery after the device stops operating, but in the time of one's duration, warpage department will no longer recover because of fatigue, this condition of easily taking place the leakage, the bolt that is the fulcrum is simultaneously under warpage many times, consequently take place tensile deformation and creep easily, make bolt fastening power descend, further lead to the leakproofness decline of cylinder.

Disclosure of Invention

Aiming at the defects of the existing high-temperature high-pressure cylinder sealing flange in the use process in the background technology, the invention provides the high-temperature high-pressure cylinder sealing assembly which has the advantages that high-temperature high-pressure gas is used as a power source to carry out self-locking, the high-temperature high-pressure gas pushes the sealing clamping plate to be clamped with the trapezoidal bulge to complete sealing compensation, and the clamping relation is kept after the sealing clamping plate is deformed to complete the lower-level sealing compensation.

The invention provides the following technical scheme: the utility model provides a subassembly is used in high temperature high pressure cylinder is sealed, includes the flange I of first half cylinder, first half cylinder bottom, the second half cylinder of first half cylinder below, the flange II at second half cylinder top, the bolt and the nut that carry out the fastening to the one end that flange I and flange II deviate from first half cylinder, all seted up the lock groove in flange I and the flange II, all set up the transmission air flue with the interior switch-on of cylinder on flange I and the flange II, the intercommunicating pore has been seted up to one side bottom of transmission air flue, all set up the external hole with external switch-on flange I and the flange II, the spacing arch of top middle part fixedly connected with symmetry in lock groove, two symmetrical sealed cardboard have been cup jointed in the activity of lock inslot, one of sealed cardboard is served fixedly connected with magnet, the one end middle part that sealed cardboard deviates from magnet has seted up the dovetail groove.

Preferably, the buckling grooves are T-shaped, after the flange I and the flange II are closed, the buckling grooves form buckling cavities, the middle parts of the two ends of each buckling cavity protrude to form trapezoidal bulges, the two waist parts of each trapezoidal bulge are inclined planes, and the inclination angle of each inclined plane is four degrees.

Preferably, trapezoidal bellied two waist middle parts all are equipped with ladder I, trapezoidal bellied waist is divided into first half and latter half through ladder I, ladder I's height value is a millimeter.

Preferably, the transmission air flue is communicated with the buckling cavity through a communicating hole, the vertical center line of the communicating hole is overlapped with the vertical center line of the buckling groove, the limiting protrusions are located on two sides of the communicating hole, and the outer connecting hole passes through the bolt hole.

Preferably, the sealing clamping plate is attached to the inner wall of the buckling cavity, when the sealing clamping plate is attached to the limiting protrusion, the distance between the sealing clamping plate and the trapezoidal protrusion is five millimeters, the two waist gradients of the trapezoidal groove are the same as the two waist gradients of the trapezoidal protrusion, the height of the trapezoidal groove is the same as the height of the trapezoidal protrusion, after the sealing clamping plate is deformed, a step II is formed in the middle of the waist of the trapezoidal groove, and the height of the step II is one millimeter to two millimeters.

The invention has the following beneficial effects:

1. according to the invention, through the designed buckling groove, the transmission air passage and the sealing clamping plate, when the air cylinder is influenced by high-temperature and high-pressure gas during operation, the high-temperature and high-pressure gas is input into the buckling cavity formed by closing the buckling grooves on the flange I and the flange II through the transmission air passage, so that the sealing clamping plate is pushed by the high-temperature and high-pressure gas to be clamped with the trapezoidal bulge formed by the buckling cavity to form self-locking, and therefore, when the upper half air cylinder and the lower half air cylinder are tilted by taking the bolt as a fulcrum, the sealing clamping plate completes sealing compensation by limiting the separation of the flange I and the flange II, and the two air cylinders are kept in a sealing state.

2. The invention uses the designed buckling groove and the sealing clamp plate to ensure that the trapezoidal bulge in the buckling cavity formed after the two buckling grooves are closed, the ladder I and gradient design formed by the front half section and the rear half section of the two sides of the trapezoidal bulge is matched with the design of the two sides of the gradient in the trapezoidal groove formed on the upper sealing clamp plate to ensure that the trapezoidal groove and the trapezoidal bulge are buckled, when sealing compensation is carried out, only the front half section of the trapezoidal groove is buckled with the trapezoidal bulge and is subjected to stress accumulation for a long time to ensure that the sealing clamp plate is deformed, particularly, the ladder II is formed at the front half section and the rear half section of the trapezoidal groove, so that high-temperature high-pressure gas can push the deformed sealing clamp plate to further move, the rear half section of the trapezoidal groove is jointed with the front half section of the trapezoidal bulge under the buckling, the deformed sealing clamp plate can still carry out the sealing compensation, the buckling degree of the two cylinders is reduced, and the stress borne by the bolts is reduced, the deformation cycle of bolt is increased, increases sealed time, avoids the sealed inefficacy problem after the deformation of sealed cardboard.

3. According to the invention, through the designed sealing clamping plate, the magnet and the external connection hole, when the sealing clamping plate is deformed too much and becomes loose after being used for a long time, the rod piece can be inserted through the external connection hole to push the sealing clamping plate on one side of the external connection hole to reset, and the magnet is close to the sealing clamping plate on the other side, so that the magnet on the sealing clamping plate on one side of the external connection hole attracts the magnet on the sealing clamping plate on the other side to drive the loosened sealing clamping plate to reset, and therefore, the trapezoidal groove formed by the sealing clamping plate is completely separated from the trapezoidal bulge formed by the buckling cavity, the two cylinders can be normally opened, the buckling cavity is maintained, and the failed sealing clamping plate is replaced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the structure A in FIG. 1 according to the present invention

FIG. 3 is a schematic structural view of the sealing plate in a sealing compensation state according to the present invention;

FIG. 4 is an enlarged view of a portion of the structure shown at B in FIG. 3 according to the present invention;

FIG. 5 is a structural diagram of the deformed sealing clamping plate in a sealing compensation state;

FIG. 6 is an enlarged view of a portion of the structure shown at B in FIG. 3 according to the present invention;

FIG. 7 is a schematic view of the drive air path of the present invention;

FIG. 8 is a schematic view of a sealing chuck structure according to the present invention;

FIG. 9 is a structural diagram of the deformed sealing card of the present invention.

In the figure: 1. an upper half cylinder; 2. a lower half cylinder; 3. a flange I; 4. a flange II; 5. a bolt; 6. a nut; 7. buckling the groove; 701. a step I; 8. a transmission air passage; 801. a communicating hole; 9. a limiting bulge; 10. a sealing clamping plate; 101. step II; 11. a magnet; 12. and (4) an outer connecting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a high temperature and high pressure cylinder sealing assembly includes an upper half cylinder 1, a flange I3 at the bottom of the upper half cylinder 1, a lower half cylinder 2 below the upper half cylinder 1, a flange II4 at the top of the lower half cylinder 2, a bolt 5 and a nut 6 for fastening one end of the flange I3 and the flange II4 away from the upper half cylinder 1, fastening grooves 7 are formed in the flange I3 and the flange II4, the fastening grooves 7 are T-shaped, so that when the two fastening grooves 7 are closed to form fastening cavities, the two ends of the T-shape can form trapezoidal protrusions, and when the flange I3 and the flange II4 are closed, the two fastening grooves 7 form fastening cavities, the central protrusions at the two ends of the fastening cavities form trapezoidal protrusions, so that the trapezoidal protrusions can be fastened to the trapezoidal protrusions, and the sealing clamping plate 10 can limit the trapezoidal protrusions, thereby limiting the separation of the flange I3 and the flange II4 for sealing compensation, the two sides of the trapezoidal bulges are inclined planes, the inclination angle of each inclined plane is four degrees, so that the contact area between the sealing clamp plate 10 and the trapezoidal bulges is larger, the deformation period of the sealing clamp plate 10 is prolonged, the sealing service life of the cylinder is prolonged, and meanwhile, when the sealing clamp plate 10 deforms under long-time sealing compensation, the trapezoidal groove forms a step II101 and can still move without hindrance under the push of subsequent high-temperature high-pressure gas after being expanded, the rear half section of the trapezoidal groove can still be attached to the front half section of the trapezoidal bulges under the warping of the upper half cylinder 1 and the lower half cylinder 2 in a large area, the sealing compensation is completed, the warping degree is reduced, the deformation period of the bolt is prolonged, the long-time sealing performance of the cylinder is ensured, the middle parts of the two sides of the trapezoidal bulges are both provided with steps I701, the waist of the trapezoidal bulges is divided into the front half section and the rear half section through the steps I701, and the height value of the steps I701 is one millimeter, high-temperature high-pressure gas in the cylinder is input into the lock cavity through the transmission air passage 8, and then the two sealing clamping plates 10 are pushed to move reversely, so that the front half section of the trapezoidal groove formed by the sealing clamping plates 10 is influenced by the ladder I701 and is clamped with the front half section of the trapezoidal protrusion, and the sealing clamping plates 10 can be matched with the trapezoidal protrusion to complete long-time sealing compensation.

Referring to fig. 1, 3, 5 and 7, a transmission air passage 8 communicated with the inside of the cylinder is respectively formed on the flange I3 and the flange II4, a communication hole 801 is formed at the bottom end of one side of the transmission air passage 8, the transmission air passage 8 is communicated with the buckling cavity through the communication hole 801, the vertical central line of the communication hole 801 is overlapped with the vertical central line of the buckling groove 7, so that high-temperature and high-pressure gas in the cylinder enters the buckling cavity through the transmission air passage 8 and the communication hole 801, the high-temperature and high-pressure gas can push the sealing clamp plate 10 to be buckled with the trapezoidal protrusion to complete sealing compensation, meanwhile, the high-temperature and high-pressure gas keeps the extrusion force on the sealing clamp plate 10, the problem that the sealing compensation fails due to the fact that the sealing clamp plate 10 moves to be separated from the trapezoidal protrusion due to the tendency of warping is avoided, the external connection holes 12 communicated with the outside are respectively formed on the flange I3 and the flange II4, the external connection holes 12 pass through bolt holes, so that the bolts 5 can block the external connection holes 12, avoid high temperature high pressure gas to take place the problem of leaking from external hole 12 after deformation at sealed cardboard 10, make simultaneously sealed inefficacy back, can take off bolt 5, make the lock chamber through external hole 12 and external switch-on, thereby insert from external hole 12 through the member, promote the not hard up sealed cardboard 10 of external hole 12 one side and break away from trapezoidal arch, and stop promoting behind spacing arch 9, make magnet 11 on the sealed cardboard 10 of external hole one side attract magnet 11 on the sealed cardboard 10 of opposite side, make the magnet 11 that is attracted drive not hard up sealed cardboard 10 and break away from the trapezoidal arch of first cylinder 1 one side, thereby make first cylinder 1 and second cylinder 2 can separate, change sealed cardboard 10.

Referring to fig. 1, 3-6, 8-9, the middle of the top end of the fastening groove 7 is fixedly connected with symmetrical limiting protrusions 9, the limiting protrusions 9 are located at two sides of the communication hole 801, so that the two sealing card plates 10 cannot attract each other and close due to the magnets 11 thereon, thereby avoiding the problem that the sealing card plates 10 cannot be pushed by high-temperature and high-pressure gas, the two symmetrical sealing card plates 10 are movably sleeved in the fastening cavity, the sealing card plates 10 are attached to the inner wall of the fastening cavity, so as to avoid the problem that the sealing card plates 10 cannot move under the pushing of the high-temperature and high-pressure gas as the high-pressure gas is introduced to the other side of the sealing card plates 10, the magnets 11 are fixedly connected to one end of the sealing card plates 10, a trapezoidal groove is formed in the middle of the end of the sealing card plates 10 away from the magnets 11, the inclination of two sides of the trapezoidal groove is the same as the inclination of the two sides of the trapezoidal protrusion, and the height of the trapezoidal groove is the same as the height of the trapezoidal protrusion, after the sealing clamp plate 10 is deformed, the waist of the trapezoid-shaped groove forms a step II101 in the middle, the height value of the step II101 is one millimeter to two millimeters, so that the trapezoid-shaped protrusion can be clamped with the trapezoid-shaped groove, when the upper half cylinder 1 and the lower half cylinder 2 have a warping tendency, the sealing clamp plate 10 can perform sealing compensation by limiting the trapezoid-shaped protrusion, so as to limit the separation of the flange I3 and the flange II4 binding surface, so that the contact area between the sealing clamp plate 10 and the trapezoid-shaped protrusion is larger, the deformation period of the sealing clamp plate 10 is prolonged, the sealing life of the cylinder is prolonged, and meanwhile, when the sealing clamp plate 10 is deformed under long-time sealing compensation, the trapezoid-shaped groove forms the step II101 and can still move without hindrance under the push of subsequent high-temperature high-pressure gas after expansion, and the rear half section of the trapezoid-shaped groove can still be bound with the front half section of the trapezoid-shaped protrusion under the warping of the upper half cylinder 1 and the lower half cylinder 2 in a large area, accomplish sealed compensation, reduce warping degree to the deformation cycle that makes the bolt increases, guarantees the long-time leakproofness of cylinder, and when sealed cardboard 10 and spacing arch 9 laminating, sealed cardboard 10 is five millimeters with trapezoidal bellied distance value, makes sealed cardboard 10 can not obstruct first cylinder 1 and the separation and the closure of second cylinder 2.

The use method (working principle) of the invention is as follows:

firstly, placing two sealing clamp plates 10 into a buckling groove 7 on a flange II4, attaching the surface of the sealing clamp plate 10 with a magnet 11 to a limiting bulge 9, buckling an upper half cylinder 1 and a lower half cylinder 2, fastening a flange I3 and a flange II4 by using a bolt 5 and a nut 6, sealing the buckling grooves 7 on the flange I3 and the flange II4 to form a buckling cavity, forming a trapezoidal bulge at the bulge, and movably sleeving the sealing clamp plates 10 in the buckling cavity;

then, when the cylinder is just influenced by high-temperature and high-pressure gas and is not influenced by bolt fastening force to cause warping, the high-temperature and high-pressure gas is input into the center of the buckling cavity through the transmission air passage 8, so that the high-temperature and high-pressure gas pushes the two sealing clamping plates 10 to get rid of the suction force of the magnet 11 and move reversely, the front half sections of the trapezoidal grooves and the front half sections of the trapezoidal protrusions on the sealing clamping plates 10 are kept in a clamping state, then, when the upper half cylinder 1 and the lower half cylinder 2 start to warp with the bolt 5 as a fulcrum under long-time operation, the warping force is transmitted to the front half sections of the trapezoidal grooves on the sealing clamping plates 10 through the front half sections of the trapezoidal protrusions, the warping force is transmitted to the flange I3 and the flange II4 through the sealing clamping plates 10, at the moment, the high-temperature and high-pressure gas extrudes the sealing clamping plates 10 to keep the clamping state, sealing compensation is completed, and warping fails;

finally, when the front half section of the trapezoid groove is subjected to long-time sealing compensation, the stress accumulation on the trapezoid groove enables the front half section and the rear half section of the trapezoid groove to form a ladder II101, the sealing clamp plate 10 slightly deforms, the trapezoid groove slightly expands under the influence of the deformation, then the high-temperature high-pressure gas pushes the sealing clamp plate 10 to move again, the front half section of the trapezoid groove is inserted into the rear half section of the trapezoid protrusion, the rear half section of the trapezoid groove is in contact with the front half section of the trapezoid protrusion, at the moment, the upper half cylinder 1 and the lower half cylinder 2 are warped under the influence of the high-temperature high-pressure gas by taking the bolt 5 as a fulcrum, the front half section of the trapezoid protrusion is attached to the rear half section of the trapezoid groove, so that the sealing compensation is completed, when the sealing clamp plate 10 deforms and loosens again in the subsequent sealing compensation to cause sealing failure, the bolt 5 is taken down, the sealing clamp plate 10 close to one side of the external connection hole 12 is ejected out of the trapezoid protrusion by a rod piece through the external connection hole 12, and finally, the sealing clamping plate is stopped to be pushed under the influence of the limiting bulges 9, at the moment, the magnets 11 attached to the sealing clamping plate 10 of the limiting bulges 9 attract the magnets 11 on the sealing clamping plate 10 on the other side, and the magnets 11 on the other side drive the loosened sealing clamping plate 10 to move. And the trapezoidal groove is separated from the trapezoidal bulge and reset, finally, the upper half cylinder 1 and the lower half cylinder 2 are opened, the buckling groove 7 is cleaned, and the damaged sealing clamping plate 10 is replaced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a subassembly is used in high temperature high pressure cylinder seal, includes first cylinder (1), first flange I (3) of first cylinder (1) bottom, first lower cylinder (2) of first cylinder (1) below, flange II (4) at first lower cylinder (2) top, carry out bolt (5) and nut (6) that fasten, its characterized in that to flange I (3) and flange II (4) the one end that deviates from first cylinder (1): buckling grooves (7) are formed in the flanges I (3) and II (4), transmission air passages (8) communicated with the interior of the air cylinder are formed in the flanges I (3) and II (4), communicating holes (801) are formed in the bottom end of one side of each transmission air passage (8), external holes (12) communicated with the outside are formed in the flanges I (3) and II (4), limiting bulges (9) which are symmetrical are fixedly connected to the middle of the top end of each buckling groove (7), two symmetrical sealing clamping plates (10) are movably sleeved in the buckling grooves (7), one end of each sealing clamping plate (10) is fixedly connected with a magnet (11), and a trapezoidal groove is formed in the middle of one end, deviating from the magnet (11), of each sealing clamping plate (10).

2. A high temperature and high pressure cylinder seal assembly as defined in claim 1, further comprising: buckling groove (7) are T shape, flange I (3) and flange II (4) are closed back, two buckling groove (7) form the lock chamber, the protruding trapezoidal arch that forms in the middle part of the both ends in lock chamber, trapezoidal bellied two waists are the inclined plane, and the inclination on inclined plane is four degrees.

3. A high temperature and high pressure cylinder seal assembly as defined in claim 2, further comprising: ladder I (701) are all equipped with in two bellied waists of trapezoidal, the bellied waist of trapezoidal is divided into first half and latter half through ladder I (701), the height value of ladder I (701) is one millimeter.

4. A high temperature and high pressure cylinder seal assembly as defined in claim 1, further comprising: the transmission air flue (8) is communicated with the buckling cavity through a communication hole (801), the vertical center line of the communication hole (801) is overlapped with the vertical center line of the buckling groove (7), the limiting protrusions (9) are located on two sides of the communication hole (801), and the outer connecting hole (12) passes through the bolt hole.

5. A high temperature and high pressure cylinder seal assembly as defined in claim 1, further comprising: the sealing clamping plate (10) is attached to the inner wall of the buckling cavity, when the sealing clamping plate (10) is attached to the limiting protrusion (9), the distance value between the sealing clamping plate (10) and the trapezoidal protrusion is five millimeters, the two waist gradients of the trapezoidal groove are the same as the gradients of the two waist gradients of the trapezoidal protrusion, the height of the trapezoidal groove is the same as the height of the trapezoidal protrusion, the sealing clamping plate (10) is deformed, the waist of the trapezoidal groove forms a step II (101) in the middle, and the height value of the step II (101) is one millimeter to two millimeters.